:root {
  --green: #1f8a4c;
  --yellow: #b8860b;
  --red: #c0392b;
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e1e4e8;
  --text: #1f2328;
  --muted: #6a737d;
  --accent: #128c7e; /* WhatsApp-ish teal */
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }

.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 32px; width: 320px; }
.login-card h1 { font-size: 18px; margin: 0 0 20px; }
.login-card label { display: block; font-size: 13px; margin: 12px 0 4px; color: var(--muted); }
.login-card input { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.login-card button { margin-top: 18px; width: 100%; padding: 10px; background: var(--accent); color: white; border: none; border-radius: 6px; cursor: pointer; font-size: 14px; }
.login-card .hint { font-size: 12px; color: var(--muted); margin-top: 16px; }
.error { color: var(--red); font-size: 13px; }

.layout { display: flex; height: 100vh; }
.sidebar { width: 210px; background: #111b21; color: #d1d7db; padding: 16px 10px; flex-shrink: 0; display: flex; flex-direction: column; }
.sidebar h2 { font-size: 15px; padding: 0 10px 16px; color: white; }
.nav-btn { display: block; width: 100%; text-align: left; background: none; border: none; color: #d1d7db; padding: 10px 12px; border-radius: 6px; cursor: pointer; font-size: 14px; margin-bottom: 2px; }
.nav-btn:hover { background: #1f2c33; }
.nav-btn.active { background: var(--accent); color: white; }
.nav-btn.logout { margin-top: auto; color: #f28b82; }

.content { flex: 1; padding: 28px 34px; overflow-y: auto; }
.panel h2 { margin-top: 0; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-bottom: 18px; }
.card h3 { margin: 0 0 14px; font-size: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.stat .num { font-size: 26px; font-weight: 600; }
.stat .label { font-size: 12px; color: var(--muted); margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; color: white; }
.badge.green { background: var(--green); }
.badge.yellow { background: var(--yellow); }
.badge.red { background: var(--red); }
.badge.grey { background: #8a8f98; }

form.inline { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 14px; }
form.inline label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
input, select, textarea { padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; font-family: inherit; }
textarea { width: 100%; min-height: 60px; }
button.primary { background: var(--accent); color: white; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: 13px; }
button.secondary { background: white; border: 1px solid var(--border); padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 12px; }
button.danger { background: white; border: 1px solid var(--red); color: var(--red); padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 12px; }

.msg { font-size: 13px; margin: 8px 0; }
.msg.ok { color: var(--green); }
.msg.error { color: var(--red); }

.drip-step { border: 1px dashed var(--border); border-radius: 8px; padding: 10px; margin-bottom: 8px; }
.opt-in-warning { background: #fff8e1; border: 1px solid #f0c14b; border-radius: 6px; padding: 10px 12px; font-size: 12px; margin-bottom: 12px; }
code { background: #f0f2f5; padding: 2px 5px; border-radius: 4px; font-size: 12px; }